login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)

A007925 as a simple table

n a(n)
0 -1
1 -1
2 -1
3 17
4 399
5 7849
6 162287
7 3667649
8 91171007
9 2486784401
10 74062575399
11 2395420006033
12 83695120256591
13 3143661612445145
14 126375169532421599
15 5415486851106043649
16 246486713303685957375
17 11877172892329028459041

[-1,-1,-1,17,399,7849,162287,3667649,91171007,
 2486784401,74062575399,2395420006033,
 83695120256591,3143661612445145,
 126375169532421599,5415486851106043649,
 246486713303685957375,11877172892329028459041]

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 23 02:09 EDT 2019. Contains 328335 sequences. (Running on oeis4.)